1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

use async_compat::Compat;
use std::{future::Future, io::Result, net::SocketAddr, time::Duration};
use tokio::net::TcpStream;
use trillium_server_common::{async_trait, Connector, Url};

/**
configuration for the tcp Connector
*/
#[derive(Default, Debug, Clone, Copy)]
pub struct ClientConfig {
    /// disable [nagle's algorithm](https://en.wikipedia.org/wiki/Nagle%27s_algorithm)
    /// see [`TcpStream::set_nodelay`] for more info
    pub nodelay: Option<bool>,

    /// time to live for the tcp protocol. set [`TcpStream::set_ttl`] for more info
    pub ttl: Option<u32>,

    /// sets SO_LINGER. I don't really understand this, but see
    /// [`TcpStream::set_linger`] for more info
    pub linger: Option<Duration>,
}

/**
trillium client Connector for tokio
*/

#[derive(Clone, Debug, Copy)]
pub struct TcpConnector;

#[async_trait]
impl Connector for TcpConnector {
    type Config = ClientConfig;
    type Transport = Compat<TcpStream>;

    fn peer_addr(transport: &Self::Transport) -> Result<SocketAddr> {
        transport.get_ref().peer_addr()
    }

    async fn connect(url: &Url, config: &Self::Config) -> Result<Self::Transport> {
        let socket_addrs = url.socket_addrs(|| None)?;
        if url.scheme() != "http" {
            Err(std::io::Error::new(
                std::io::ErrorKind::InvalidInput,
                format!("unknown scheme {}", url.scheme()),
            ))
        } else {
            let tcp = TcpStream::connect(&socket_addrs[..]).await?;

            if let Some(nodelay) = config.nodelay {
                tcp.set_nodelay(nodelay)?;
            }

            if let Some(ttl) = config.ttl {
                tcp.set_ttl(ttl)?;
            }

            if let Some(dur) = config.linger {
                tcp.set_linger(Some(dur))?;
            }

            Ok(Compat::new(tcp))
        }
    }

    fn spawn<Fut>(future: Fut)
    where
        Fut: Future + Send + 'static,
        <Fut as Future>::Output: Send,
    {
        tokio::task::spawn(future);
    }
}